Ravus, Dust-Scaled

Flying, Haste
Ravus, Dust-Scaled can only attack if there are
at least four other creatures on the battlefield.
When Ravus is blocked by three or more
creatures, exile it.
If an effect would exile Ravus, you may choose
to put it in your graveyard instead. If Ravus
would enter the graveyard this way, you may
choose one: Scry 3, Mill 3 or Bolster 3.